Socket-shell.



J KEEFE.

SOCKET SHELL.

APPLICATION FILED AUG-23, 1912.

w E/VTOR Patented Mar. 14, 1916.

WITNESSES TTORNEY TEDSTATES l Application filed August 23,

1'0 iZZ/wjwm zt may concern .7- i

i it llt'nown that 1 Josnrn KI'ZPJFI'Z, aeitii if he U lnited States, and}: resident eli ml the county of Sullolk and State achu setts have invented eerta i it new I me-ful Improvements in Socket-Shells, hieh thej following is a" speeilleation,' inj connection with the aeeom pa flying in'g;whichforms a part ol the same.

invention.relates to casings for elec- 1 apparatus t 1 urea:'partieularly it relates to socket tall and toj:remdxuxhle insulating linings ch m s sneh soelgel. shells whiehjare ed Within the caps without bending or 1 t marring any portien of the, iningliuijn g aiulgthere preferably seem-(at retnevah lering, lrel'eraoly this ring lel ati lvel movement with relation to the p for a purjmse toghe hereinafter debe M nnt'iurther relatesto theloeknst oj s care the eap and shell of the gether, and more parti'eularly to nr hel ding [the seress's or other xlou-j dinally extending locking members to hell'topreventtheir aeeidental disenrefit. f I Q he eeompimvingdrawing showing, i'vetemlaulin'ienls of my inyention, and nwvhieh the same rel'ermiee numerals e totsnnilar parts ,in' the several figigure/1 i. a vertieal longitudinal an eleetrie light sokzlcet equipped y 'nvei tirm,-a. husk with whieh it is em times as (l heing also shownin section;

2 isla transverse vertical seelion sub ntlallyenftlfie lint-.2 2 of Fig. I looking heldfirectienofthearrows; Fig. l, is a ental seetionon the line il -fl fol Fig. th husk being omitted; Fig.4 is a l'ragtary 'idexeleidptiol {ol' the shell showing rred t'or n of means to hold the nfits properposition; Fig. 5 is a de-,, ,,i;omivieu oh the line 5-4) ofFig. 3,49 g, IL m-speetiwe iew of the revl ri ng;; l gl' .7 is a side elevation,

n awa m' one form of my ins iowinglthe ears ol': the ring eot-ingwwith; notehesl in the insulating vhieh j is the m'el'erred eonslruetion; H is a,persneetive view ol the remov-w muting lining; Fig. 9 a fragmenlelelevatin showing a modifiedl'orm ';Qlf ig.; 101' is Elf fragmentary side inventio Speeifieatlon of Letters Patent.

PATENT 0mm,

H 31531713, opBosToNQ MASSACHUSETTS. ASSI GNl'JR TO THE ZEE SOCKETAND NUFACTUBINGCOMPANY, OIBOSTON, MASSACHUSETTS; AeCORPORATION 0]? S CKET-SHELL.

Patented till-[14,191.69 Serial No. 116,623. l

elevation of a l'urtlu-r modiliration showing a dill'erent term of wedge memher; and Fig. ll is a detail .fragmentary seetional view on the linel l---'ll of Fig.4 i i It has l ven old prior to my invention to use insulating linings for the eap of electric light soeket shells fn'hieh were held fwithin the mpsimply hy l'ri'etienal eontaet with its interior surl'aee. Hi1lltlS lllfitflltll'lt old prior to my im'g-ntum to use a, removable insulating lining; l'oi: the eapol' socket shells which ing placed upon the insulating'memlier agamsprmgingout into itsorigmal eon lit on to eooperate with the interior projections so as to prevent the insulating lining from falling out of theeap. 'l'hese insulating linings areusual'ly made of liber, asis well knownin the art,1and are usually Cut a way tol'orm notehes or other surfaces to cooperate with shouldersor surlaees within the eap. l l l l V v "ln praetiee, immense numbers of eleetrie light smcketswind their (casings are soldto manut'aeturers "Mime-in lix turesto he'assemhled with theether portions of the fixtures made; or assembled, hysueh munujl'aeturers. It is frequently necessary for sueh 1nanul'ar'turerslto'lrelinish or replate the soeket easing, including the eap to mateh or harmonize with thepartieular deetrie fixture of n'hieh it is to he a part. llefere sueh replating or refinishing, hojyrevverfiit is neeessary to remove the insulatingllining from the soekefishell. The loiver tiller. lining {)WlllSlllHtllllJ lining, whielr insulates the shell portion of theYsoeket, readilyslips has to he pried oll'; orfiotherwise removed from tlua interio r loeking neehanisin,

mounted on the'interior'ot the eap, and H wh-ieh cooperateswith the notehes. fingers, or other portions ol'lhe insulating lining, to holdit in"itsijposition within the rap. 'lhis frequently mars the insulating linihg.

'lhe l'reqm-ney and extent ol'the damage to v the lmmg depends upon the labor employed for this purpose, lsually unskilled lalior iS lining could be. obtained. where unskilled labor employed with the result that large numbers of theinsulatingliningshave been either ruinedby being removed from the interior lockingsurfaces in the cap, or havebeemso torn ormarred that when they were again placed in the cap, after it has beenreplated or refinished, it was liable not to retain its position and the tears or cracks in the lining caused by its removal and repositioning -wouldoften defeat the very purpose ofproyiding the cap withan insulation to preient 1t from becoming electrified with possible damage-to the fixture or shock to the person who may be handling it after the fixture has been installed. Often the interior in sulating lining was so torn or marred that it could not be placed back in the cap and consequently either'a new lining had to besubstituted or, if one was not at hand, the manufacture'of the entire electriclight sccket,'. or, the entire fixture of which it was'to form; a part would have to be delayed until a new In some cases D was .employed and speed in res-assembling the sockets after replating was demanded by the employer, no

lining would be placed in some of the socket-sI It has been further found that where screws extending longitudinally ofjthe socketare used to hold the-cap and socket together, that it requiresconsiderable dexterity to lock the parts together, for the reason that the screws are apt to fall out of the shell, particularly if the shell is ad-; justedvertically to the cap which is the.

usualform of adjustiiient. This is particu- I larly true when-the socket is used in COIUIQG tion with a husk, it being well known in the u trade; that the cap is first used to position the husk. v By my invention I avoid bending or otherwise marriiig the insulating lining which is substantially'rigidand formed of substantially heai'y titer, porcelain, or'any other suitable insulating material for it does not have to yield .or bend to be sprung over any projectionfto hold it within'the cap.

-My invention further p erinits the locking screwsto be held to the shell after 'being once positioned even though the shell is subjected to comparatively rough usage. lly

my invention moreover, the cap can be first secured to a bracket (to hold a husk or other member) and then the rotatable ring can le moved around'to any suitable position to co-[ operate with the screws and still permit the sicket key to extend through the opening in the husk.

In \the illustrative embodiments of my for the rap is preferably substantially hat I rim l6 and the shell 18.

inifchtion shown in the drawing. '1 is the l'(!' jino alilr insulating lining, formed ot an v permit the free passage of the longitudi-- nally extending screws 5, The brim is provided in 'any suitable manner with an upwardly extending projection or wedge 6. This wedge may be riveted to the brim as shown in l ig. 1, or it may be molded in the 7- of the insulating member 8, so as to form a. rigid hollow enlargement 9, or it may be cast. solid as 10 .in the insulating lining 11, Fig. IOK-This enlargement or wedge member, however it is formed, co-

operates with the jaws 12;12'01 the split,

revoluble ring 13. Fig. 6. This ring is provided with outwardly extending fingers 14, 14 which are tapped, and are rotatably mounted in an interior groove 15, spun, or otherwise formed, in the cap 16 of the electric light socket 17.

The .shell 18 is provided with the usual enlargement 19 which is provided withopenings 20, 20 for the reception of the longitudinally extending locking screws 5, 5 whichextend up through the interior of the shell 18, their upper ends being formed with screw threads 21 to cooperate with the threads in the earsl-t. 14 of the revoluble ring 13. By bringing the ring 13 into proper position so that the ears 1-1, llwill cooperate with the screws 5, 5, itis obvious i that by simply screwing up onthese screws 5, 5 the'shell 18 will be securely held to the cap IG and in this mannerthe two parts of the electric light socket shell 17 will be cured together. If the electric light socket v is used with a husk 22, as is frequently done, though. of course, it willbe understood that my socket is adapted to be used without a liusk the cap 16 is employed to secure the husk to the fixture 23 in the usual practice. Should the opening in the hush (not shown) for the key 24 be'in such a position, after the cap and husk are secured to the fixture 23 as not to permit the ends of the screws 5 to register with the ears 14. 14- so as to iot-kthe cap and shell to gethei". it is merely nccessarv to rotate the ring 13 by the finger or a screw, driverl 01 other similarinstrument, until the ears are made to assume a position to cooperate with the screws 5, when the parts can be im-" incdiatelysecured togetherbv tighteningup the screws 5. lhefric tionof the ring 13 in the groove 15. after the screws 5 have been properlv screwed up. is sufficient to prevent relative nioi'en-ient between the cap it of course. to be underzttood that the removable insulating lining 1 moves with the removable ring l land that both the ring i i and the lining can llt"lllllllkftllzlt lly ii e aa y arl i a nothen ifeature of my invention is' to roiide' yieldingmeansto prevent the acciiiintal; disengagement of thel'screws from he llllh i Oneiform of my invention is to *ovide theshell} IS'with a groove formed r bending in, a portion r of the shell. This IllI-clIbllOlltlOH otthe shell yieldingly engesthe upper, portionof the screws 5, 5. e iipper portion 26 otthe bent in part of heieap isinlthe sameconditionas when erewithrejadon the screws and' prevents the ccidental, or unauthorized withdrawal of he screws from the shell; In fact considrablepressure enithe end of the screw is equii'etl toilforce the screw threads past the t mportion 25, This insures the screws 'ziningf their position onthe shell after nee {heingiass/embled without the annoyance having them amp; away i from the shell becoming otherwise lost or, misplaced. I lso,preferablylhend the insulating lining 27 theishell lfikforming it with the vertical roove 28Fuwhich serves also to present a ore, or} less yielding pressure one portion ositionwithinthe shell. The fricof; the bent-in po'rtionQfi of the shell, owe r, jw,ill itself, iwithoutany aid from he 'nsli'lating j lining. prevent the screws opping' 'out. thoughtheinsulating nin ma mar ,l eitherflwith; or withoutthe bent in rtion 25fofi the shell. a i

in ulating base 29 provided with, l grooves to reeeivei the, inwardly exdmgridgesBOI formed by-ibendin in the kihg scrlewsi 5, 5.{ In the preferred contraction the insulating basej3l, is in all espects siinilartothe insulating base 29. ex-

t it that the longitudinally, extending by s32for the receptionloff, the inwardly nglnidgesf'lOfiQ'of the insulatinglini ar extended up to form shoulders 33, tw enwhich the ears 1.4. 14 of the ring re received, In; this nreierred construction fteri, positioningthei insulating member 31, that the earsfll, ,14are received in the ohgitudinal grooves 132, there can be no elatilizex movement between thering 13 and e insulatinghaseBl. In thisform. the l lofithei insi'ilating,lining 1 andthe g 113 a *(received in thefdepressed or cut 34 in thetop of thelinsnlating ng thusdescribed this invention in ba an several illustrative embodif to the detailsyofiwhich I do' to he limited, what is claimed as hatqitis desired to secure by Let-' n is set forth inthe appended dating lining which, 1 when ,repositioned Q "shell also coiiperates with the lowest th reivsfi, Sand tendsto keep them in be used as an additional preulatinghilining;21: to accomm date the 1. In a cap tomrsocket shell the combination of a rigid insulat ng lining and a split ring to secure the rigid insulatinglining to the cap and meanscarried by, the insulating dining and held' .by thering between the ends of the latter tosecure the lining and ring together.

2. i In a cap for a socket shell, thecombinati'on ofa rigid insulating liuingand a split ring to secure the rigid;insulatinglining to the cap. and expanding means carried by the insulating lining to expand the ring.

3. In acapforasocket shelltheicomhinationofa remoiu blerigid insulating lining and a removable split ring to secure the ,rigid insulatinglining to the cap and a prof jection carried by the insulatinglining and held bythe ring between the ends of the latter to secure the lining and ring together. 4, In aycapflforasoeket shell, thelcombination of aremovable rigid insulating lining and a removable split ring to secure the rigid insulatingdining to thecap, and expanding means carried by the insulating l'ining to expand thering) i l 5. In a cap {for a socket shell, the :com-

bination of a capprovided with a circumferential groove, a rigid removable insulating lining, a removable split r1ng,and1means carried by the ring to cooperate with the groove and means carried by the ring to,

coiiy'ierate with the rigid insulating lining.

6. In a'socket shell, the combinationof a shell. a cap, andlongitudinally extending rotativellocking means to secure the cap and "shelltogether; and means to prevent the longitudinally extending locking means from accidentally becoming disassociated from the shell. 1 f l l 7. In a socket shellfthe combination of longitudinally extending locking screws to hold the cap and shell together and means indeperulent ofthe threading of said screws to removably hold ,thescrewsto the shell.

8. In a socket shell, the combination of longitudinally extending locking screws to hold thecap and shelljtogether, and yielding means to removably hold the screws to the shell. l 9. In a socket shell.:th'e combination of a longitudinally extending locking screw to hold the can and shelltogcther', and a shell provided with an indentation tofrictionally engage the screwjto prevent its accidental withdrawal from the shell.

10. In-a socket shell.the fcombination of hold the cap and shell together, and a shell face of which cooperates with the lower thread of the screwto' preveut the accidental withdrawal of the latter from thefshcll.

a lamgitudinally extending locking screw to i 'll. Ina-socket shell. the combination of a iso brovided with an indentation and with an insulating lining, both of which frictionally engage the screw to prevent its accidental \\'ltl1(lii1\\'2ll.fTOID. the shell.

312. In an electric light s0cket' the combination of a capprovided with a eircumfei e en'tml gnome, auspht ring having ears to'be received in the circun'iferential groove; 2i

rigid insulating lining for the cap, coperating means ;1I1i8d by the ring and lining to secure the lining to the split ring, lengitn dinally extending locking screws to lock the cap and shell together, and an insulating base-"portion having longitudinal. grooves to RALPH A. SCHQENBERG; EBEN-A. THAGHER. 

